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Statistics Through Applications | 2nd Edition | ISBN: 9781429219747 | Authors: Daren S. Starnes
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Domain names When it comes to Internet domain names, is

Chapter 2, Problem 2.40

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QUESTION:

Domain names When it comes to Internet domain names, is shorter better? According to one ranking of Web sites in 2008, the top 8 sites (by number of hits) were yahoo.com, google.com, youtube.com, live.com, msn.com, myspace.com, wikipedia.org, and facebook.com. Th ese familiar sites certainly have short domain names. Figure 2.18 is a histogram of the domain name lengths for the 500 most popular Web sites. (a) Estimate the mean and median of the distribution. Explain your method clearly. (b) If you wanted to argue that shorter domain names were more popular, which measure of center would you choosethe mean or the median? Justify your answer.

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QUESTION:

Domain names When it comes to Internet domain names, is shorter better? According to one ranking of Web sites in 2008, the top 8 sites (by number of hits) were yahoo.com, google.com, youtube.com, live.com, msn.com, myspace.com, wikipedia.org, and facebook.com. Th ese familiar sites certainly have short domain names. Figure 2.18 is a histogram of the domain name lengths for the 500 most popular Web sites. (a) Estimate the mean and median of the distribution. Explain your method clearly. (b) If you wanted to argue that shorter domain names were more popular, which measure of center would you choosethe mean or the median? Justify your answer.

ANSWER:


(a) The mean of the domain name lengths is 8.83 and the median is 8. This was calculated by summing the length of all 500 domain name and dividing it by 500 to get the mean, and sorting the data by

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